<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <script src="../../lib/jquery.min.js"></script>
    <script>
        $(document).ready(function(){
            $("button").click(function(){
                $("p").text("变换");
            });
        });
    </script>
</head>
<body>
<h2>这是标题</h2>
<p>这是一个段落。</p>
<p>这是另一个段落。</p>
<button>点击这里</button>
</body>
</html>
